128959494 has 32 divisors (see below), whose sum is σ = 268925184. Its totient is φ = 41190240.

The previous prime is 128959489. The next prime is 128959511. The reversal of 128959494 is 494959821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8959 + ... + 18389.

It is an arithmetic number, because the mean of its divisors is an integer number (8403912).

Almost surely, 2^128959494 is an apocalyptic number.

128959494 is an abundant number, since it is smaller than the sum of its proper divisors (139965690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128959494 is a wasteful number, since it uses less digits than its factorization.

128959494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9532.

The product of its digits is 933120, while the sum is 51.

The square root of 128959494 is about 11356.0333743786. The cubic root of 128959494 is about 505.2245434797.

The spelling of 128959494 in words is "one hundred twenty-eight million, nine hundred fifty-nine thousand, four hundred ninety-four".